At a recent motorsport gathering, four proud owners were grouped together around the blue Ferrari, discussing their gleaming sports cars. Alan was overheard bragging about his brand new silver Mercedes. Mr Smith went to great lengths to explain to Brian, the virtues of his blue Ferrari. Mr Wilshaw and David occasionally made eye contact. Mr Richards showed everyone a recent photo of his red Rolls Royce. Mr Stone listened intently while Charles went on about his green Corvette. Who owns which car?